Hackers accessed Newkirk Products' server that stored personal information, including names, mailing addresses and birthdays. But the server did not include Social Security numbers or bank or credit card information.

Johns Hopkins Medicine released a statement saying, "We are aware of a data breach that took place at Newkirk Products Inc., which is a third-party vendor that prints member insurance ID cards for health plans across the country, including members of several insurance plans operated by Johns Hopkins HealthCare LLC.

"We are working with Newkirk Products Inc. to notify plan members who may be impacted by this breach. We have been assured that the breach only included information that appears on printed member ID cards. Newkirk Products Inc. does not have access to other patient information."

Newkirk has established a dedicated assistance line for anyone seeking additional information regarding this incident, as well as steps to better protect against identity theft. To reach the line, call 855-303-9773.

Newkirk has also established a dedicated website (www.newkirkproductsfacts.com) on which members can access information regarding the incident, including frequently asked questions and answers.